The premise needs to be examined if casting a vote as provided for in the US constitutional system of political elections in fact amounts to a “stamp of approval” on whatever wicked thing the votee has, or even is foreseeably likely, to do.
You might cast a vote for a candidate because you love the candidate, but there may be other reasons.
No premise needs to examined - you are only looking for a way to support EVIL and not be accountable for it!
If he doesn’t have the same teachings as God’s Word, you welcome him/vote for him _ you SHARE in his wicked deeds.
Same sex marriage and abortion ARE WICKED DEEDS that you SHARE the consequences in. See how deception/satan/mitt reigns THE WEAK in?